(Members of the Association of Catholic Teachers were walking a picket line this morning outside Archbishop Ryan High School in Northeast Philadelphia. Credit: Jim Melwert)

PHILADELPHIA (CBS) – Talks aimed at ending the nearly week-old strike by Catholic high school teachers in the Archdiocese of Philadelphia are continuing.

The teachers’ union says there has been progress on seniority but the archdiocese hasn’t budged from its desire to hire part-time teachers.

The archdiocese, in a statement, claims the union is still seeking a 14½-percent raise over three years and hasn’t addressed what the archdiocese calls “educational reform issues.”

Seven hundred lay teachers at 17 area Catholic high schools have been on strike since last Tuesday (see related story). Schools have been open, and freshmen and sophomores are taking tests that were scheduled for later in the month (another related story).